I'm getting this issue where Bandicam records only my microphone audio instead of everything else. I am not actually trying to playback my Mic at all, but I am recording audio in Audacity at the same time.
I only get this issue with a specific game, Tribes Ascend, and only in OpenGL/DX window targeting mode. I found that I could workaround the issue by running the game in windowed mode and using the rectangle record feature but I got a fairly horrible FPS drop.
I'm using windows 7 and have set my sound to record from Win7 Sound (WASAPI), I have also tried Primary Sound Capture Driver and get identical results. If I disable my microphone it gives me an error message about not starting audio recording correctly but then works perfectly if I retry, however I need my microphone enabled to record audio.